Knowledge Base » Blog Archive » Enable Outgoing SMTP Server Authentication

Enable Outgoing SMTP Server Authentication

May 15th, 2020

All our servers need you to enable outgoing SMTP server authentication to be able to send emails. This prevents any unauthorised senders from relaying mails through the mail server.

Your email software may not automatically enable this setting during initial setup. Steps below can be followed for popular email clients:


These steps apply to most recent versions of Outlook such as Outlook 2013, 2016, and 2019:

  1. Click File
  2. Under Account Information, click Account Settings. On the drop-down click Account Settings
  3. On the pop-up, select the email address, and click Change…
  4. Click More Settings button on the POP and IMAP Account Settings
  5. Click Outgoing Server tab, check the box for “My outgoing server (SMTP) requires authentication” and make sure “Use same settings as my incoming mail server” is selected.
  6. Click Advanced tab, make sure the incoming and outgoing port numbers and encryption are correct.
  7. Click OK to save.

Mac Mail

These steps apply to Mac users with OS from Mac OS Sierra, High Sierra, and Catalina:

  1. Click Mail menu and select Preferences.
  2. Select the email address you’re doing changes with and click Server Settings
  3. On Outgoing Mail Server (SMTP) section, uncheck box “Automatically manage connection settings”.
  4. Check port number and encryption are correct, and select Password for Authentication.
  5. Click Save.


These steps apply to both Windows and Apple users:

  1. Click your email address on the left, under Accounts, select View settings for this account.
  2. Click Server Settings under your email address.
  3. Under Security Settings click the drop-down box and select Password.
  4. Click OK.